Title :
Evaluation of mechanical properties of magnetic materials using a non-destructive method
Author :
Yang, David X. ; Kankolenski, Kevin P. ; Hua, Susan Z. ; Swartzendruber, L.J. ; Hicho, G.E. ; Chopra, Harsh Deep
Author_Institution :
Dept. of Mech. & Aerosp. Eng., State Univ. of New York, Buffalo, NY, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
A magnetic-based nondestructive evaluation (NDE) method, which employs Barkhausen effect and measurement of hysteresis loops, is developed and used to correlate the magnetic and mechanical properties in ultra low carbon (ULC) steel. The NDE test equipment offers the capability to detect small deviations from linearity that occur in the stress-strain curve well below the 0.2% offset strain. Results show that three properties extracted from the experimental results, jumpsum and jumpsum rate (derived from the Barkhausen spectrum), and differential permeability (derived from the B-H loops), vary sensitively with small deformations well below the 0.2% offset strain in ULC steels; however coercivity is a slowly varying function of small applied strains
Keywords :
Barkhausen effect; carbon steel; coercive force; ferromagnetic materials; magnetic hysteresis; magnetic permeability; nondestructive testing; stress-strain relations; Barkhausen effect; coercivity; differential permeability; hysteresis loop; jumpsum method; magnetic material; mechanical properties; nondestructive evaluation; stress-strain curve; ultra low carbon steel; Capacitive sensors; Linearity; Magnetic field induced strain; Magnetic hysteresis; Magnetic materials; Mechanical factors; Mechanical variables measurement; Permeability; Steel; Test equipment;
Journal_Title :
Magnetics, IEEE Transactions on
